\documentclass[ruledsections,a0]{sciposter}
\usepackage[english]{babel}
% \usepackage[latin1]{inputenc}
\usepackage{multicol}
\renewcommand{\titlesize}{\Huge}
\title{}
\author{}
\institute{}
\rightlogo{}
\leftlogo[1]{}

\begin{document}

\newcommand{\imsize}{\columnwidth}

\maketitle

\definecolor{SectionCol}{rgb}{0.1,0.1,1}

\begin{multicols}{3}

\section{}

\PARstart{}%for 'lettrine'

\begin{figure}
\centering
 {\resizebox{0.6\columnwidth}{!}{\includegraphics{figures/fig.pdf}}}
 \caption{}
 \label{}
\end{figure}

\begin{tiny}
\bibliographystyle{unsrt}
\bibliography{poster}
\end{tiny}

\end{multicols}
\end{document}
